The email (below) clearly states that by preordering a PSP console you will receive a free preorder pack...
We don't know exactly what this information is but we are trying to find out. This has got me hyped up for LCS now and I've just pre-ordered a PSP! So I should get the pack in a few days, I'll be posting about it as soon as I receive the info.
If you preorder a Sony PSP Console from the site, we will send you an Exclusive FREE PSP Preorder Pack, containing everything you want to know about the launch titles, a PSP life-size replica containing special info cards, a DVD packed with footage, Exclusive GTA Liberty City Stories information and details of an Exclusive trade-in offer!
Links: PSP Page @ GAME.net